Self-threading loom-shuttle.



PATENTED AUG. 23 1904 0. W. FROST. SELF THREADING 1.00Mv SHUTTLE.'

-APPLIUATIQN FILED JUNE 17. 1904.

no 10mm UNITED STAT S Patented August 23, 1904.

PATENT OFFICE.

CHARLES w. FROST, F WATERVTLLE, MAINE, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

I SELF-THREADING LOOM-SHlUTTLE.

SPECIFICATION forming part of Letters Patent Ne. 768,218, dated August 23, 1904.

Application filed Tune 17, 1904.

Toall whom it Jnay concern.-

Be it known'that 1, CHARLES W. FROST, a citizen of the United Statesfand a resident of VVaterville, countyof Kennebec, State of Maine, have invented an Improvement in Self- Threading Loom-Shuttles, of which'the following description, in connection with the acinstance, in looms of the Northrop type,- shown} in United States Patent No. 529,940.

In using cop-skewers the heads thereof are, provided with annular projections or rings to enter upright notches in the inner facesof spring-jaws located within and atone end of the chamber in the shuttle-body provided for-3 "firmly held by the jaws.

the reception of the filling-carrier. ZAt thef time the latter is transferred from the feeder} to the Shuttle the notches in the jaws should? be in the paths of theannular projections on; the head'of the incoming filling-carrier to enable the same to be properly engaged andv Otherwise the head will not be held securely'nor in proper position in the shuttle. I

When using cop-skewers, it has been found that when the shuttle is stopped in the box the jar sometimes tends to tilt up the tip of the skewer, causing warp breakage when the Shuttle is moving through the warp. So, also,

' when a change of filling is taking place there is sometimes a tendency of the discharged or; ejected co p-skewer to throw ahead when struckl by the incoming one, and, as a matter of fact,; skewers have in this manner been thrown so far ahead as to stick their points or tips into;

the thread-passage of the threading device.

My present invention has for its object the production of means to efiectproper position-j ing of the shuttle if the jaws thereof are not,

in correct position to receive the head of an,

incoming filling-carrier and to prevent tilting; up or throwing forward of a filling-carrler-of Serial No. 212,983. (No model.)

the cop-skewer type more particularly. It

will be manifest, however, that if a bobbin were made with a shoulder like the cop-skewer herein shown it would operate in the same manner, my invention consequently covering such a bobbin as well as a cop-skewer.

The construction to be hereinafter described provides for endwise movement of theshuttle when it is necessary to position the jaws.

Figure l is a side elevation of a self-thread- I ing'loomshuttle embodying one form of my invention, a cop-skewer being shown above-it as about to enter the chamber In the'shuttlebody. Fig. 2 is an enlarged plan view, partly broken out'and in section,10f the holding end of the shuttle and showing the novel'features of my invention, a cop:skewer being shown in operative position; and Fig. 3 is a partial longitudinal sectional detail on the line 3 3, Fig. 2, omitting the cop-skewer. 1 I

The shuttle-body A, having an elongated chamber A extended therethrough to receive the filling} carrier; the automatically selfthreading block T, Fig. 1, having a head 6 overhanging a sloth-leading to the deliveryeye t of the shuttle; the spring-acting holding-jaws it, having upright notches 71. in their inner faces, Fig. 3, tore ceive the usual annularprojections or rings b on the head not the filling-carrier, shown as a cop-skewer; the block It, Fig. 8, with which the jaws are con- .nected, its retaining-screw 50, and the metallic I plate 0 embracing the block and having an inclined portion or guide-bridge 0 extended between the jaws near their bases, may be and are all substantially of well-known 'or usual construction in self-threading shuttles of the specified type.

- The inner walls of the chamber A are recessed opposite the jaws at 1 to permit the insertion of two forwardly-extended forwardly-divergent spring or resilient supports or arms 2, their rear ends 3 passing along the opposite faces of the block it and having their upper edges lying'flush withthe top of the block. The plate e is wide enough'to lap over such upper edges, asshown in Fig. 2, and firmly posltion the arms, the screws 50 passing through the flat portions 3 thereof. The outer end of each of the resilient arms 2 is bent inward and broadened just beyond the free end of the adjacent jaw, as at 4, such broadened portions or wings being upwardly and forwardly inclined or flared to present cam-surfaces which extend higher than the tops of the jaws, as clearly shown in Fig. 3. Each wing is provided with a straight-faced depending part or stop 5, which, as shown in Fig. 3, projects beyond the lower end of the arm and enters loosely an upright recess 6 in the wall of the shuttle-body below the scoopedout portion 1.

1f when transfer takes place the shuttle is properly positioned, the notches if of the jaws will receive the projections b on the skewerhead Z), and the latter will be properly held in the shuttle, the jaws firmly holding the head, and at such time the stops 5 will bear against the flat inner end of the head at each side of and below its longitudinal axis. Consequently the tip of the skewer cannot by any possibility tilt up when the shuttle is stopped no matter how great the jar or shock due to the stopping of the shuttle. \Vhen the head of the incoming skewer hits the head of the one then in the shuttle to discharge or eject it, the stops 5 prevent any forward movement of such discharged skewer, because its head cannot move forward past the stops until the top of the head is moved down beyond their lower ends, and at such instant the skewer is wholly outside the shuttle.

It will be manifest that the device herein shown is not adapted to act in conjunction with ordinary bobbins, because there is no sharply-defined flat surface at the inner end of the head, as is the case ina cop-skewer, for the head of the bobbin at its inner end is rounded and tapered off to meet the barrel.

Supposing at the instance of transfer the shuttle is not far enough in the shuttle-box, the jaws cannot properly engage the head of the filling-carrier, as the notches b are not in the paths of the projections V. In such a case the head of the filling-carrier will strike the cam-surfaces or wings 4 as the filling-carrier descends, and the shuttle will be moved to the right viewing Fig. 1 until the notches b are-positioned properly to receive the projections and transfer is completed. The camsurfaces slide along under the head and its projections, and the entrance of the latter into the notches ofthe jaws is assured. The resiliency of the supporting-arms 2 provides for any requisite slight give or yield laterally during such operation. Should the shuttle be too far in the box, the outer end of the head I) will engage the part e and the latter will slide under the head, causing the shuttle to move to the left, Fig. 1, until the notches are in proper position to receive the projections F. The lower ends of the cam-surfaces or wings 4 are substantially opposite the center of the head and so far distant from the notches W in a horizontal direction that as the incoming head approaches the proper point in its descent the inner liat end thereof will wipe or slide over the lower ends of the wings and the upright faces of the stops 5 as the projections enter the notches of the jaws.

Having fully described my invention, what I claim as new, and desire to seen re by Letters Patent, is

1. A shuttle-body chan'ibered for the reception of a filling-carrier, holding-jaws located within and at one end of the ehaml'ier and adapted to engage and hold the head of the filling-carrier, and means on the shuttle separate from said jaws to cooperate with the head of an incoming filling-carrier and properly position the jaws to receive the head, said means acting against the inner end of the head when held by the jaws to prevent tilting up of the tip of the filling-carrier.

2. A shuttle-body chambered for the reception of a filling-carrier, holding-jaws located within and at one end of the chamber and adapted to engage and hold the head of the filling-carrier, and resilient arms outside the jaws and having rearwardly-inclinerl cam-surfaces at their free ends projecting above the jaws, to cooperate with the] ad of an incoming filling-carrier and properly position the jaws to receive the head.

3. A shuttle-body chambered for the reception of a filling-carrier, holding-jaws located within and at one end of the chamber and adapted to engage and hold the head of the filling-carrier, and devices movable with the' shuttle and separate from said jaws to cooperate with the inner and outeriends of the head of an incoming filling-carrier and cause longitudinal movement of the shuttle in either direction to properly position the jaws to receive the head.

4. A shuttle-body chambered for the reception of a filling-carrier, holding-jaws located within and at one end of the chamber and adapted to engage and hold the head of the filling-carrier,and yieldingly-snstained means adjacent the free ends of and separate from the jaws to cooperate with the head of an incoming filling-carrier and properly position the jaws to receive the head, said means havingdepending portions to act against the inner end of the head below its center and prevent tilting of the filling-carrier.

5. A shuttle-body having a chamber for the reception of a filling-carrier, holding-jaws loeated within and at one end of the chamber to engage and hold the head, and means depending below the free ends of the jaws to engage the inner end of the head of a fillingcarrier when held by the jaws, to prevent the same from tilting up, or from being thrown forward when ejected from the shuttle.

extended beyond their free ends,.upturned and I 6. A shuttle-body having a chamber for the reception of a cop-skewer, holding-jaws located within and at one end of the chamber to engage and hold the head, and means mounted on the shuttle separate from the jaws to engage the inner endof the head of a cop-skewer below and at each side of its longitudinal center when held by the jaws.

7 A shuttle-body having a chamber for the reception of a cop-skewer, holding-jaws located withinand at one end of the chamber to engage and hold the head, resilient arms mounted on the shuttle outside the jaws and forwardly-flared wings on the ends of the arms to cooperate with thehead of an incoming copskewer and properly position the jaws to receive the same, and depending stops below the wings to act against the inner end of the head and prevent the cop-skewer from tilting up,

and also to prevent the cop-skewer from throwing forward when discharged-from the shuttle.

'cated within and at one end of the chamber tov engage and hold the head, and yieldingly-sustained means mounted on the shuttle to cooperate with the inner end of the head of a cop-skewer when held by the jaws, to prevent tilting up of the cop-skewer when the shuttle is stopped, and to prevent throwing forward of the cop-skewer when discharged from the shuttle. e In testimony whereof I have signed myname to this specification in the presence of two subscribing witnesses.

CHARLES FROST. Witnesses:

MAYBELLE HASKELL, G. W. HUssEY. 

